Ricoh F400 Service manual

Technical Bulletin No. RTB-005
SUBJECT: F400/F410 Dual Job Feeder separation belts
(manual correction) DATE:SEP.15.’93 PAGE: 1 of 3
PREPARED BY: S.MANO
CHECKED BY: FROM: Copier Technical Support Group
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL: F400/F410
The quantity of the separation belt have been changed from two to four.
Reason of the modification:
On the original printed by the laser printer, the toner may not be fused sufficiently and the
image may smeared by the separation belts.
To prevent this, two more separation belts are added to widen the contacting area
between the separation belts and the original so that the separation pressure is not
concentrated to the narrow area.
After this modification, these separation belts are still PM parts and the replacement
interval is 1PM (120k copies) as same as before this modification.
Because of this modification, the illustrations in page 7, 14, 15, 34 and 35 should be
changed. The quantity of the separation belts should be doubled. There is no correction
except illustrations.
Manual corrections:
Page 7 - upper illustration
[A]
[B]
[C]
[D]
[E]
[F]

Technical Bulletin No. RTB-005
SUBJECT: F400/F410 Dual Job Feeder separation belts
(manual correction) DATE:SEP.15.’93 PAGE: 2 of 3
Page 14 lower illustration
Page 15 illustration
[A]
[B]
[C]
[D]
[E]
[A]
[B]
[C]
[D]

Technical Bulletin No. RTB-005
SUBJECT: F400/F410 Dual Job Feeder separation belts
(manual correction) DATE:SEP.15.’93 PAGE: 3 of 3
Page 34 lower illustration
Page 35 illustrations
[E]
[D]
[A]
[B]
[C]
[D]

Technical Bulletin No. RTB-006
SUBJECT: F400/F410 Troubleshooting DATE:Nov.30, ’93
PAGE: 7 of 10
9. DJF Original Skew
< Phenomenon>
If original skews occur as illustrated even if the DJF height is correctly adjusted, perform
the following adjustment.
< Possible cause>
This skew is caused because the transport belt is faster than the feed-in motor speed,
even if both motor speeds are within the specification.
< Countermeasure>
1. Feed-in motor speed adjustment
Adjust the feed-in motor speed so that the motor speed becomes higher (within
specification).
1–1 Turn DIP SW 101-1, 2, 4 to "ON".
1–2 Turn DIP SW 102-1 to "ON".
1–3 Turn VR 103 towards "H" to turn LED 101 (Red) on.
1–4 Turn VR 103 towards "L" to turn LED 102 (Green) on.
2. Transport belt motor speed adjustment
Adjust the transport belt motor speed so that the motor speed becomes lower (within
specification).
1–1 Turn DIP SW 101-1, 2, 4 to "ON".
1–2 Turn DIP SW 102-2 to "ON".
1–3 Turn VR 104 towards "L" to turn LED 103 (Red) on.
1–4 Turn VR 104 towards "H" to turn LED 102 (Green) on.
Rear
Left scale

Technical Bulletin No. RTB-008
SUBJECT: DJF Multiple feeding DATE:Nov.30, ’93
PAGE: 1 of 2
PREPARED BY: S. MANO
CHECKED BY: FROM: Copier Technical Support Group
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL: F400/F410
< Phenomenon >
Original multiple feeding occurs when there is high friction between the originals. This
tends to occur especially when the originals have staple holes, or computer forms with
rough edges.
< Possible cause >
When the originals [A] comes between the feed rollers [B] and the separation belts [C],
they meet the mylar [D] between them and the separation belts. This guide mylar
transports the originals smoothly to the gap between the feed rollers and the separation
belts. The mylar length determines the original separation force. If the mylar is longer, the
area where the originals touch the separation belt becomes narrower, therefore the
separation force become weaker. If the mylar is shorter, the separation force becomes
stronger. (If it is too short, too much separation force stops original feed)
As a result of our investigation, we found that making the mylar 2mm shorter is the best
condition (higher separation ability without feeding error).
[C]
[D]
[A]
[B]

Technical Bulletin No. RTB-008
SUBJECT: DJF Multiple feeding DATE:Nov.30, ’93
PAGE: 2 of 2
< Countermeasure >
Replace the original guide mylars (2 mylars per machine). New part is the assembled part
of the mylar and the bracket. New part number is A3761254.
For the cut-in serial number, please refer to the modification bulletin which will be issued
soon.
Guide mylar ass’y : Part number A3761254

Technical Bulletin No. RTB-009
SUBJECT: Installation procedure DATE:Nov.30, ’93
PAGE: 2 of 3
3. Caution for DJF shipping tape removal (dual job feeder service manual - installation
procedure page, 24)
When removing the tape [B] fixing the original press roller shaft [C], be careful to confirm
that the shaft is correctly in the holder [D]. It is possible that the shipping tape adheres
strongly to the shaft. The shaft migit be pulled out from the holder when the tape is
removed.
If the shaft is out of position, the original will not feed.
[B]
[D]
[C]

Technical Bulletin No. RTB-010
SUBJECT: DJF feed roller assembly replacement DATE:Nov.30, ’93
PAGE: 1 of 3
PREPARED BY: S.MANO
CHECKED BY: FROM: Copier Technical Support Group
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL: F400/F410
1. Manual correction
In the feed roller replacement procedure (page 32 to 33), there are steps asking to remove
the original table and original guide. Actually, this procedure is not necessary. Please skip
steps 2, 3, 4, and 5. You can directly access the feed roller.
2. Procedure change due to modification.
In the domestic market, we have experienced that the customer took off the feed roller
assembly [A] when removing a jammed original. When the jammed original is pulled to the
front, the feed rollers are pulled to the front and the joint part [B] comes out from the drive
shaft. To prevent this, The middle roller [C] position has been changed (to the rear) as
shown below.
[A]
[C] [B]
[B]
Old
New
[C]
Guide Plate
Front

Technical Bulletin No. RTB-010
SUBJECT: DJF feed roller assembly replacement DATE:Nov.30, ’93
PAGE: 2 of 3
Before the modification, the middle roller could be shifted to the front when the feed roller
was pulled to the front. After the modification, when the feed roller is pulled to the front,
the middle roller hits the guide plate and it cannot be moved to the front. This prevents the
joint part from being separated by mistake.
To replace the feed roller assembly, the following procedure is necessary before
performing step 6 (slide the feed roller assembly to the front, then remove it).
* Remove the guide mylars
* Remove the snap ring.
* Hold the feed roller.
After the modification, procedure "14.2 feed roller replacement" is changed as shown in
next page.

Technical Bulletin No. RTB-010
SUBJECT: DJF feed roller assembly replacement DATE:Nov.30, ’93
PAGE: 3 of 3
1. Turn off the main switch then open the feed cover [A].
2. Remove the guide mylars [B] ( 1 screw each ).
3. Remove the snap ring [C].
4. Slide the roller [D] to the rear.
5. Hold the feed roller [E] then slide the shaft to the front, then remove the feed roller
assembly as shown.
6. Remove the four snap rings [F], then remove the feed rollers.
7. Install the new feed rollers, then re-assemble the machine.
[E]
[C]
Rear
[F]
[D] Front
[B]
[A]

Technical Bulletin No. RTB-016
SUBJECT: DJF VERTICAL REGISTRATION ADJUSTMENT FOR TWO
SIDED ORIGINAL MODE DATE:Jan.31, ’93 PAGE: 1 of3
PREPARED BY: S. MANO
CHECKED BY: FROM: Copier Technical Support Section
CLASSIFICATION:
ActionRequired
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL:
F400/F410
DUAL JOB FEEDER
Dual job feeders with the following serial numbers have the possibility that the vertical
registration for two sidedoriginal mode is improper duetoinsufficiant inspection during
production.
MachineCodeFrom To
A376-15 first production 4123110190
A376-17 A3383100001 A338310674
A376-22 53231000015323110149
A376-26 3D81030001 3D81130040
A376-27 A3383100921 A3383111103
If necessary, please adjust the vertical registration (refer to page 46 of the DJF service
manual).
Ifthe vertical registration adjustmentcannot be carriedout usingthe procedure on page 46
ofthe DJF service manual (by using SP adjustmentmode),returnthe SP adjustmentdata
to"00".
Then adjust thevertical registrationby turningVR102onthe DJF main board.TheVR102
adjustment has a wider adjustable range than SP adjustmentmode (adjustablerangeby
SPadjustment:-7.5 mm ∼+7.5 mm, 0.5mm/step).
A376-10No machine

Technical Bulletin No. RTB-016
SUBJECT: DJF VERTICAL REGISTRATION ADJUSTMENT FOR TWO
SIDED ORIGINAL MODE DATE:Jan. 31, ’93 PAGE: 2 of 3
Two Sided Original Mode
1. Remove the copier’s left scale [A] (2 screws).
2. Remove the small cover at the rear side on the upper DJF cover then turn on DIP SW
101-2, 101-4, and 102-1.
3. Set a sheet of A4 / 8 1/2" x 11" (53 ∼ 80 g/m2/ 14 ∼ 22 lb) paper sideways on the
original table.
4. Push SW 101 [B].
5. After the original stops on the exposure glass, gently raise the DJF (so that the original
does not move).
6. Confirm that the gap between the trailing edge of the paper and the left edge [C] of the
original rear scale is 10 ±2 mm.
7. If the gap is not within specification, adjust the registration by using the copier SP mode
( SP Adjustment - PAGE 6).
NOTE: 1. Before setting the original on the original table again, open and close the
feed unit cover [C].
2. After completing the adjustment, return the DIP switches to their original
condition.
1
[A]
10 ±2
[B]
[C]
VR102

Technical Bulletin No. RTB-016
SUBJECT: DJF VERTICAL REGISTRATION ADJUSTMENT FOR TWO
SIDED ORIGINAL MODE DATE:Jan. 31, ’93 PAGE: 3 of 3
8. If the registration cannot be adjusted even though the SP data is changed to the
maximum value, return the data to "00".
9. Adjust the vertical adjustment by turning VR102 on the DJF main board.

Technical Bulletin No. RTB-017
SUBJECT: MANUAL CORRECTIONS DATE: Jan. 31,’94
PAGE: 9 of 13
Page 6-19 1.15
•Incorrect
1.15 DUAL JOB FEEDER
Definition: [Level:B]
Encoder pulse is not detected by the DJF main board......
Possible causes
DJF feed motor defective
DJF transport motor defective
DJF feed out motor defective
DJF inverter motor defective
•Correct
1.15 DUAL JOB FEEDER/RECIRCULATING DOCUMENT HANDLER
Definition: [Level:B]
Encoder pulse is not detected by the DJF/RDH main board......
Possible causes
DJF/RDH feed motor defective
DJF/RDH transport motor defective
DJF/RDH feed out motor defective
RDH inverter motor defective
Page 11 of DJF Illustration
•Incorrect
In Fig.2, the left paper is expressed by a dotted line and the right paper is expressed by
solid line.
•Correct
In Fig.2, the left paper position is shown
by a solid line and the right paper position
is shown by a dotted line as shown.

Technical Bulletin No. RTB-017
SUBJECT: MANUAL CORRECTIONS DATE: Jan. 31,’94
PAGE: 10 of 13
Page 12 of DJF 3rd line of [Figure 3] explanation
•Incorrect
A few pulses (0 ∼14 pulses: depends on the SP mode adjustment) ....
•Correct
A few pulses (0 ∼14 pulses: depends on the DIP switch adjustment) ....
Page 27 of DJF 3rd line of upper NOTE and Illustration
•Incorrect
..... loosen four truss head screws [D], and tighten.
•Correct
..... remove the cover [D] (4 screws), and loosen then tighten 4 screws [E].
[D]
[D]
[E]

Technical Bulletin No. RTB-017
SUBJECT: MANUAL CORRECTIONS DATE: Jan. 31,’94
PAGE:11 of 13
Page 43 of DJF Illustration
•Incorrect
Page 46 of DJF Step 6
•Incorrect
6. Confirm that the gap between the trailing edge of the paper and the left edge [C] of
the original rear scale is 10 ±2mm.
•Correct
6. Confirm that the gap between the trailing edge of the paper and the right edge of the
original rear scale is 10 ±2mm.
Page 1 of A377 Sorter Stapler Table (Minimum paper size, Sort mode)
•Incorrect:
A5 51/2" x 81/2" lengthwise
•Correct:
lengthwise: A5 51/2" x 81/2"
Sideways: A5 81/2" x 11"
A5 sideways is long enough for transport
rollers’s distance. It is small difference
but 51/2 inch is not long enough for transport
roller’s distance. Therefore the minimum side
of inch size paper (side ways) is 81/2" x 11".
•Correct
[C] [E]
[D]
[C]
[D]
[E]
81/2 A5
Sideways
51/2

Technical Bulletin No. RTB-020
SUBJECT: Manual Correction DATE:
February. 15, 1994
PAGE: 1 of 2
PREPARED BY: S. Mano
CHECKED BY: FROM: Copier Technical Support Section
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL: F400 DJF
MANUAL CORRECTION
Page 4-59 DUAL JOB FEEDER Preventive Maintenance Schedule
Incorrect
EM 120K 240K 360K NOTE
DUAL JOB FEEDER (for originals)
Transport Belt CRRR Belt cleaner. Replace if
necessary.
Pick-up Roller CCCC Alcohol. Replace if
necessary.
Feed Roller CRRR Alcohol. Replace if
necessary.
Separation Belts CRRR Alcohol. Replace if
necessary.
Correct
EM 120K 240K 360K NOTE
DUAL JOB FEEDER (for copies)
Transport Belt CRRR Belt cleaner. Replace if
necessary.
Pick-up Roller CCCC Alcohol. Replace if
necessary.
Feed Roller CRRR Alcohol. Replace if
necessary.
Separation Belts CRRR Alcohol. Replace if
necessary.

Technical Bulletin No. RTB-020
SUBJECT: Manual correction DATE:
February 15, 1994
PAGE: 2 of 2
Each parts’s actual estimated life is 48K original feed times.
Since estimated average copies per one original is 2.5, we recommend to replace the
transport belt, separation belts and feed roller at the same time as the copier’s 120K PM.
(48,000 x 2.5 = 120,000)
Because the F400/F410 series has an SP mode PM counter (indicates the original feed
time since the last PM), you can recognize how many times originals have been fed since
the last PM parts replacement. We recommend utilizing this function to manage the PM
parts replacement interval.
Therefore, if you utilize PM counter for original feed ( 9 PM COUNTER CLEAR PAGE4),
the PM table is as follows:
EM 48K 96K 144K NOTE
DUAL JOB FEEDER (for originals)
Transport Belt CRRR Belt cleaner. Replace if
necessary.
Pick-up Roller CCCC Alcohol. Replace if
necessary.
Feed Roller CRRR Alcohol. Replace if
necessary.
Separation Belts CRRR Alcohol. Replace if
necessary.
Concerning the RDH, the copy volume and original feed times are almost the same.
We just recommend to replacing PM parts at the same time as the copier’s 120K PM
(transport belt: replace at every copier’s 240K PM).

Technical Bulletin No. RTB-025
SUBJECT: DJF ORIGINAL DOUBLE FEEDING DATE: Mar. 15 ’94
PAGE: 1 of 2
PREPARED BY: S. MANO
CHECKED BY: S. Hamano FROM: 2nd Technical Support Section
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
Revision of service manual
Information only
Other
MODEL:DJF for F400
series
Phenomenon
Original double feeding (two originals are fed at a time) tends to occur when the
separation belts [A] become dirty with foreign matter which being transferred from the
original surface.
Cause
When the separation belt surface is covered with foreign matter, the friction between the
original and the separation belt decreases. This reduces the original separation ability.
[A]
[A]

Technical Bulletin No. RTB-025
SUBJECT: DJF ORIGINAL DOUBLE FEEDING DATE: Mar. 15 ’94
PAGE: 2 of 2
Countermeasure
Clean the separation belt surface with alcohol to recover the separation ability. We
recommend to do this at every customer visit including at the installation to eliminate
further EM calls.
Note: If block original feeding (10~20 sheets of originals are fed at a time) occurs,
replace the original guide mylars [A] to the new parts (A3761254). Please refer to
RTB-008 for the details.
[A]